If you are considering to buy this camera lens kit you might consider as one option to buy directly from Japan. Some stores in Japan sells in reasonable price for overseas. Here shows what I found today.

$583.98 + shipping fee on Rakuten Global here under.
Shipping fee seems to be around $26 (EMS by Japan Post: Traceable and insured) just my exploration.
If you have interest you can go to the store here under.